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The 2006–2010 GMT900 Duramax trucks — covering the LBZ and LMM — represent the platform at its most capable from the factory. These trucks tow more, make more power, and handle more abuse than their predecessors. This 5-row extruded aluminum radiator is engineered specifically for the 2006–2010 Chevy and GMC 2500HD and 3500HD with the 6.6L Duramax. It mounts directly in the factory location with no cutting, no drilling, and no fabrication required.
Fluidyne eliminates that failure point entirely with a fully extruded aluminum core — a single-piece design with no brazed tube-to-header joints anywhere in the core. Every tank, fitting, and seam is finished with premium TIG welds throughout.
The 5-row design gives you significantly more cooling capacity than the factory radiator or most 2–3 row aftermarket units — critical if you’re towing heavy, running a tuner, or dealing with a hot climate. At 23.5″ of core height, this unit is sized to the larger GMT900 engine bay, and the fin pitch is optimized for the factory shroud setup so you’re not fighting airflow or fan clearance issues.
2006–2010 Chevy/GMC Silverado/Sierra 2500HD / 3500HD | 6.6L Duramax (LBZ, LMM) | Crossflow | 34″ core
